US3718901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer amplifier system
Assignee: Superior Oil Co
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Filing: 1970-10-07
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Granted: 1973-02-27
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Expires: 1990-10-07
Abstract
Abstract A transducer amplifier system including a transducer having connectors affixed to the leads thereof and an amplifier circuit having mating connectors for selectively being connectable to said transducer, the amplifier circuit including a battery and semiconductive switching facilities for automatically connecting the battery to the amplifier when the transducer is connected to the amplifier and for disconnecting the battery from the amplifier when the transducer is disconnected to avoid battery drain.
Inventors
- 👤 W Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/18; G01V1/181
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
65 words
A transducer amplifier system comprising: an amplifier; connector means for electrically interconnecting a transducer to said amplifier; terminals for connection of a battery for powering said amplifier; and semiconductive control means responsive to the interconnection of said transducer and amplifier for connecting said battery to said amplifier, and responsive to the disconnection of said transducer and said amplifier for disconnecting said battery from said amplifier.
Claim 2
Dependent Claim
65 words
A transducer amplifier system comprising: an amplifier; connector means for electrically interconnecting a transducer to said amplifier; terminals for connection of a battery for powering said amplifier; and semiconductive control means responsive to the interconnection of said transducer and amplifier for connecting said battery to said amplifier, and responsive to the disconnection of said transducer and said amplifier for disconnecting said battery from said amplifier.
Claim 3
Dependent Claim
31 words
A transducer amplifier system as set forth in claim 1 wherein said semiconductive control means includes a semiconductive switch which is rendered conductive by a DC circuit completed through said transducer.
Claim 4
Dependent Claim
23 words
A transducer amplifier system as set forth in claim 2 including means connected to the input of said amplifier for blocking DC signals.
Claim 5
Dependent Claim
25 words
A transducer amplifier system as set forth in claim 3 including means for preventing the signals generated by said transducer from operating said semiconductive switch.
Claim 6
Dependent Claim
61 words
A battery powered amplifier system which can be selectively connected to a load, comprising: an amplifier; a battery for energizing said amplifier; connector means for interconnecting said load and said amplifier; semiconductive control means responsive to the interconnection of said load and amplifier for energizing said amplifier and responsive to the disconnection of said load and amplifier for de-energizing said amplifier.
Claim 7
Dependent Claim
61 words
A battery powered amplifier system which can be selectively connected to a load, comprising: an amplifier; a battery for energizing said amplifier; connector means for interconnecting said load and said amplifier; semiconductive control means responsive to the interconnection of said load and amplifier for energizing said amplifier and responsive to the disconnection of said load and amplifier for de-energizing said amplifier.
Claim 8
Dependent Claim
58 words
A battery-powered amplifier system as set forth in claim 5 wherein said load is connected by said connector means to the output of said amplifier and said semiconductive control means includes a semiconductive switch which is rendered conductive by the application thereto of a DC signal provided upon interconnection of said load to the output of said amplifier.
Claim 9
Dependent Claim
23 words
A battery-powered amplifier system as set forth in claim 6 including means connected to the output of said amplifier for blocking DC signals.
Claim 10
Dependent Claim
91 words
A transducer amplifier system comprising: an amplifier; connector means for electrically connecting a transducer to said amplifier; a battery; a first circuit path connecting said battery and said amplifier and including a transistor which is normally biased to be nonconductive; and a second circuit path connecting said battery and said connector means, completion of said second circuit path by the connection of said transducer to said amplifier causing a DC potential to be applied to said transistor rendering said transistor conductive to complete said first circuit path and energize said amplifier.
Claim 11
Dependent Claim
91 words
A transducer amplifier system comprising: an amplifier; connector means for electrically connecting a transducer to said amplifier; a battery; a first circuit path connecting said battery and said amplifier and including a transistor which is normally biased to be nonconductive; and a second circuit path connecting said battery and said connector means, completion of said second circuit path by the connection of said transducer to said amplifier causing a DC potential to be applied to said transistor rendering said transistor conductive to complete said first circuit path and energize said amplifier.
Claim 12
Dependent Claim
22 words
A transducer amplifier system as set forth in claim 8 including means for preventing the application of DC signals to said amplifier.
Claim 13
Dependent Claim
30 words
A transducer amplifier system as set forth in claim 8 wherein said second circuit path is connected to the base of said transistor for controlling the operation of said transistor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |